This series fixes issues faced when an HDMI2.1 sink that does not support DSC is connected via HDMI2.1PCON. It also includes other minor HDMI2.1 PCON fixes/refactoring. Patch 1-3 Have minor fixes to consider output_format while computing dsc_bpp and have consistent naming for pipe_bpp, link_bpp and compressed_bpp. Patch 4-6 Calculate the max BPC that can be sufficient with either RGB or YCbcr420 format for the maximum FRL rate supported. Rev2: Split the refactoring of DFP RG->YCBCR conversion into smaller patches, as suggested by Jani N. Also dropped the unnecessary helper for DSC1.2 support for HDMI2.1 DFP. Rev3: As suggested by Ville, added new member sink_format to store the final format that the sink will be using, which might be different than the output format, and thus might need color/format conversion performed by the PCON. Rev4: Fix typo in switch case as, reported by kernel test bot. Rev5: Corrected order of setting sink_format and output_format. (Ville) Avoided the flag ycbcr420_output and used the sink_format to facilitate 4:2:2 support at a later stage. (Ville) Rev6: Added missing changes for sdvo. (Ville) Added check for scaler and DSC constraints with YCbCr420. Rev7: Split change to add scaler constraint in separate patch, and rebased. Rev8: Rebased. Fixed check for mode rate with dsc in modevalid. Fixed scaler constraint as per display version. Rev9: Rebased. Rev10: Addressed review comments from Ville. Dropped patch to check for mode rate with dsc during modevalid, as the compressed bpp is already selected with bandwidth considerations. Rev11: Fixed the policy to use output format as RGB first if possible, followed by YCbCr444, atlast YCbCr420. Also removed the scaler-constraints with YCbCr420, as these are handled in scaler code. (Ville) Rev12: Added a patch for configuring PCON to convert output_format to YCBCR444. Added patch to have consistent naming for link bpp and compressed bpp. Rev13: Few patches of original series are merged. Rebased the patches and addressed few comments from Ville on last series. Ankit Nautiyal (6): drm/i915/dp: Consider output_format while computing dsc bpp drm/i915/dp_mst: Use output_format to get the final link bpp drm/i915/dp: Use consistent name for link bpp and compressed bpp drm/i915/dp: Handle BPP where HDMI2.1 DFP doesn't support DSC drm/i915/dp: Fix FRL BW check for HDMI2.1 DFP drm/i915/dp: Add a wrapper to check frl/tmds downstream constraints drivers/gpu/drm/i915/display/intel_dp.c | 237 ++++++++++++++------ drivers/gpu/drm/i915/display/intel_dp.h | 14 +- drivers/gpu/drm/i915/display/intel_dp_mst.c | 26 ++- 3 files changed, 187 insertions(+), 90 deletions(-) -- 2.25.1
